Rafael Nadal has a fondness for practical jokes but when he found himself 4-0 down to Thomaz Bellucci of Brazil on Tues everything suddenly got serious.
If Andy Murray can play much better than this, it would be scary.
Preamble: It's a battle of aces tonight at Citi Field as the New York Yankees take on the New York Mets, but one of those aces isn't one you would normally imagine.
As if having an entire nation on his back was not burden enough going into Wimbledon, Andy Murray has had to shake off the combined weight of a galaxy of former players in recent weeks who doubt the extent of his back problems. On Saturday night, angered to the point of combustion, he invited the sceptics to come and examine his medical records.
If anyone can light up Wimbledon on a grey day, it is Maria Sharapova, yet there will always be a hint of Russian melancholy about her, as if life some times is too good to be true and therefore should be treated with suspicion
Ascot has been generous to Frankie Dettori throughout his quarter-century in the saddle but the grand stage, the moment and the script have rarely combined with such sympathy as in the closing stages of Thursday's Gold Cup.
Team Sky have confirmed Chris Froome as their leader for the Vuelta a España with the Tour de France champion looking to become the first Brit to win the Spanish race.
Bradley Wiggins’ return to track cycling, being made at the relatively ripe old age of 35 with the object of winning an eighth Olympic gold medal, continued in reassuring style in Derby on Friday night.
There was a reason for 12.24 Wisconsin time on Friday being widely regarded as a potentially seminal moment.